You know what's crazy about this? I have an ESTJ friend who has exhibited behavior similar to your dad.
For example, in the past, we tried to meet up over a weekend (we live far away from each other). I sent him an email on a Monday asking him if there was a weekend over the next few months that would work for him. He said he was booked up mostly for the next few months, but if I was free the upcoming weekend he'd be up for it.
So basically, that meant that he was willing to accommodate me and change his plans for the short term, about five days in advance.
I couldn't meet up with him that weekend. We instead set a date about three months in advance. Two weeks before that weekend, he told me his plans had changed, but then asked me if I could do the weekend before the one we had planned. Yet again, he planned something in the long term, but didn't mind changing it when the short term time arrived.
So at this point I kind of thought he was a P, because he didn't seem to mind changing his plans as they came up.
Finally, another time I tried to set up something with him, but I waited until about a month in advance to contact him. When I did, he told me he was pretty much booked up for the next six months! That's when I totally saw his J come out.
Now, I'll be honest that it feels like a coincidence that both he and your dad are both ESTJ's. But it's an interesting thing to think about, at least. I don't see the connection at all, but is it possible that ISJ's and ESJ's have a different way of looking at this? Like I said, the idea doesn't seem to make sense because I see no reason for it to be the case, but it is kind of an interesting coincidence.
For example, in the past, we tried to meet up over a weekend (we live far away from each other). I sent him an email on a Monday asking him if there was a weekend over the next few months that would work for him. He said he was booked up mostly for the next few months, but if I was free the upcoming weekend he'd be up for it.
So basically, that meant that he was willing to accommodate me and change his plans for the short term, about five days in advance.
I couldn't meet up with him that weekend. We instead set a date about three months in advance. Two weeks before that weekend, he told me his plans had changed, but then asked me if I could do the weekend before the one we had planned. Yet again, he planned something in the long term, but didn't mind changing it when the short term time arrived.
So at this point I kind of thought he was a P, because he didn't seem to mind changing his plans as they came up.
Finally, another time I tried to set up something with him, but I waited until about a month in advance to contact him. When I did, he told me he was pretty much booked up for the next six months! That's when I totally saw his J come out.
Now, I'll be honest that it feels like a coincidence that both he and your dad are both ESTJ's. But it's an interesting thing to think about, at least. I don't see the connection at all, but is it possible that ISJ's and ESJ's have a different way of looking at this? Like I said, the idea doesn't seem to make sense because I see no reason for it to be the case, but it is kind of an interesting coincidence.